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8 Sheets-Sheet 1.

(No Model.)

J. BURRY.

TELEGRAPH.

Patented May 28, 1889.

(No Model.) s SheetsSheet 2. J. BURRY.

TELEGRAPH.

No. 404,165. Patented May 28, 1889.

u. PETERS, W WM. we

(No Model.) 8 Sheets-Sheet 3.

' J. BURRY.

TELEGRAPH.

No. 404,165 Patented May Z8, 1889.

u. PETERS. P mm. mm. o. c,

(No Model.) Q 8 Sheets-Sheet 4.

J. BURRY.

TELEGRAPH.

No. 404,165. Patented May 28, 1889.

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8 Sheets-Sheet 5.

(No Model.)

J. BURRY.

TELEGRAPH.

Patented May 28, 1889.

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TELEGRAPH.

No. 404,165. Patented May 28, 1889.

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(No Model.) 8 SheetsSheet 7.

J. BURRY.

TELEGRAPH. No. 404,165. Patented May 28, 1889.

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8 Sheets-Sheet 8.

(No Model.)

J. BURRY.

TELEGRAPH. No. 404,165. Patented May 28. 1889..

N. PEYERsuPbvh-LW Wmmnu. D. I;

UNITED STATES PATENT OEEIcE.

JOHN HURRY, OF NE YORK, N. Y., ASSIGNOR OF 'l\Y()-'llllRDS TO JAMES E. MUNSON AND ALOYS \YIRSCIIING, BOTH OF SAME PIACE.

TELEGRAPH.

SPECIFICATION forming part of Letters Patent No. 404,165, dated May 28,- 1889.

Application filed June 3, 1388. Serial No. 276,475. (No model.)

To all 1071.0711- it 7120]] concern:

Be it known that I, JOHN .liURRY, a citizen of the United States, residing at New York, conntyot New York, and State of New York, have invented certain new and useful Improvements in Electric Tlelegraphs, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to an apparatus whichisdesigned for use in those cases where it is desired to energize any one of a large number of electro-magnets located at a distant point.

The invention is applicable to a great variety of uses, but is especially applicable to typewriters, typesetting machines, printingtelegraphs, and analogous instruments.

A full umlerstainling of the invention can best be gi ven by an illustration and a detailed description of an instrument embodying the same. All preliminary description will therefore be omitted and a full description given, reference being had to the accompanying drawings, in which Figure l is a plan view of an instrument embodying the invention in what I regard as its best form. Fig. i is a sectional elevation of the same, taken upon the line 2 of Fig. 1. Fig. 2-3 is a diagram illustrating the system of electrical connections. Figs. .4. to ill illustrate modified organizations, which will be hereinat'ter described.

Referring particularly to Figs. 1 to 3, it is to be understood that 1 to S, inclusive, represent a number of electromagnets termed working-magnets, which it is desired to energize in proper order to operate any mechanismsuch, for example, as the type-bars or type wheel of a type-writer or printingtelegraph. These magnets are included in a correspomli'ng number of branches, to to h, inclusive, of an auxiliary circuit, '2', which may be a local circuit including a local battery, 9, or may be a branch of the main circuit, as will be presently explained. The circuit 1'. is

provided with switches l5 1U 17 19, by which they can be respectively connected to either of the branches a b, c (7, cf, and g 72. By this means it becomes possible, as will readily be seen, to close the auxiliary circuit through either one of the working-magnets.

The circuit-closers ll are operated by means of a polarized relay, A,which is in cluded in the main circuitli, leadingfrom the distant point from which it is desired to energize the working-magnets. The relay A may be of the ordinary :iorm, consisting oi an electro-magnet having a polarized armature; but as herein shown it is composed of two helices, 20, which are wound in reverse directions, as indicated in Fig. 3, and are provided at their opposite ends with polarized armatures 19, which carry the movable members of the circuit-closers 1O 11. The operation of the relay is such by reason of the reverse windingof its helices that whenever a current of one polarity is caused to pass over the circuit B one of the armatures 10 will be attracted and the other repelled, thereby closing the circuit through one of the branches (75 or Z, as the case may be) and breaking the circuit through the other, and vice versa. In order, therefore, to close the circuit through. one or the other of the branches 7.: Z, as may be desired, it only necessary to cause the current passing over the main circuit 1 to be of the required polarity to attract the armature carrying the circuit closer for that branch, and in order to close the circuit through the branches 7. 1 alternately, or in any desired order of succession, it is only necessary to change the polarity of the current passing over the main circuit.

The armat ures l 9 are provided with springs or other retractiles, 21, by which they are normally held in position to break the circuit through both of the branches 7.: 1.

For the purpose of operating the relay to attract its respective armatures the main circuit 13 may be provided at the transmittingstation with any suitable form of circuit making and breaking device, and for the purpose oi. changing the polarity of the current the circuit may be provided with any of the ordinary forms of pole-changer. 'ihese devices are well known in the art, and therefore need no specific description. They form no part of the present invention, and are therefore not illustrated in the present case.

The auxiliary circuit 1' is provided with branches (1 rs i, also forming auxiliary circuits which include electro-magnets C D E F, termed switch-magnets, and connected with the switches 13, &c., in such manner that the latter form circuit-closers M N for these auxiliary circuits. The switches 13 14 and 15 16 17 18 are connected, respectively, to sliding switch-bars 22 23, which are arranged to be normally held in a mid-position by means of springs or other retractiles, 24, and are provided at their opposite ends with pivoted arms 25, having shoulders which are arranged to be engaged by catches 26, formed upon the armatures 27 of the magnets C D E F, when the latter are rocked inward by the energizing of the magnets.

The armatures 27 are provided with backstops 2S and with retractiles 29, by which, whenever either one of the armatures has been rocked inward by the energizing of its magnet and has engaged with the shoulder upon the arm 25, it will upon the de-energizing of the magnet be moved outward against the back-stop, thereby moving the bar (22 or 23, as the case may be) and shifting the switches to which the bar is connected, so as to break the circuit through the magnet and at the same time connect the switches with the branches at n, &c., or a b, &c., as the case may be.

The operation of the apparatus as thus far described is as follows: In describing this operation it will be assumed that in order to energize the relayA to operate the circuit-rcloser 1.0 it is necessary to send over the circuit B what may be termed a current, and that to energize the relay to operate the circuitcloser 11 what may be termed a current is required. Assuming now that it is desired in the transmission of a message or for any other purpose to energize the magnet 1, the operator at the sending-station will cause a +current to pass over the circuit B. This will energize the relay and operate the circuit-closer 10 to close the auxiliary circuit through the magnet 0, thereby rocking its armature 27 inward, so as to cause its catch 26 to engage with the shoulder upon the arm 25 of the bar 22. As soon as the circuit B is broken by the operator the spring 21 will operate the circuit-closer 10 to break the auxiliary circuit, and thus de-energize the magnet 0. As soon as this is done the spring 29 will rock the armature 27 of that magnet back to its normal position, andthus shift the bar 22, so as to cause the switches 13 14 to connect with the branches m 0. The operator will then cause a second current to pass over the circuit B, thereby again operating the circuit-closer 10 to close the circuit; but the switch 13 having been shifted so as to connect with the branch m the circuitwill be closed through the magnet E, thereby rocking its armature 27 inward, so as to cause its catch 26 to engage with the shoulder upon the-arm 25 of'the bar As soon as the circuit B is broken after the second current, the circuit-closer 10 will be operated to break the circuit, and thereby deenergize the magnet E, and the spring 29 of the armature of that magnet will then rock the armature so as to shift the bar 23 and switches 15 16 17 18, so as to cause the switch 15 to connect with the branch a. The operator will then cause a third current to pass over the circuit B, thereby again operating the circuit-closer 10; but the switches 13 15 being then connected to the branches m a, the magnet 1 will be energized and will perform its work. Located in the circuit 2', between the branch q and the working-magnets, is a magnet, G, termed areleasing-magnet, the armature 30 of which is connected to a lever, 31, which is arranged to engage with a toe, 32, extending from a rock-shaft, 33, having toes 34, which extend beneath the ends of the arms 25 in such manner'that when the toes 34 are rocked upward they will engage with the arms and disengage the latter from the catches 26, thereby releasing the bars 22 23 and permitting them to be restored to their normal or mid position by their springs 24. The shaft 33 is provided with an arm, 35, which is connected by a rod, 36,with a similar arm extending from a similar shaft, 33, located upon the opposite side of the instrument and having similar toes, 34, arranged to engage with the arms 25 at that side of the instrument. The shafts 33 are connected to springs 37 which operate to normallyhold the shafts in such position that the toes 34 will be slightly below the ends of the arms 25. As the third current is sent over the line B and the auxiliary circuit is closed to energize the magnet '1, the magnet G will be energized and the lever 31 will be rocked outward, so as to engage with and pass the toe 32, as indicated by dotted lines in Fig. 2. As soon as the circuit B is broken after sending the third current, and the circuit-closer 10 is thereby operated to break the circuit through the branch 7c, the magnets 1 and G will be de-energized and the lever 31 will be restored to its normal position by its retractile 38. 111 being restored to its normal position it will engage with the toe 32 and rock the shafts 33 and toes 34, so as to cause the toes to engage with the arms 25 and release the latter from the catches 26, and thereby permit the bars 22 23 and the switches to be restored to their normal position, as just explained.

It will thus be seen that in order to energize the magnet 1 and cause it to perform its work it is necessaryin the organization which has just been described tocause three impulses to pass over the circuit B, two of said impulses operating to select the magnet and the third causing it to be energized.

If, instead of energizing the magnet 1, it is lOlilGS desired to energize the magnet 2, the operation will be exactly the same, except that the second impulse will be instead of l, thereby cans in the relay to operate the circuit-closer 11, to close the circuit through the branch. Z, and the switch it haying been shifted by the previous impulse, so as to connect with the branch 0, the auxiliary circuit will be closed through to t r, so as to energize the magnet I and thereby, when the circuit is broken by the Cll'tilllll-CIOSOI' 11, cause the bar tobe moved so as to connect the switch 15 with the branch 1) instead of with the branch (1, and so the several magnets may be energized in succession or in any desired order by causing and impulses to pass over the circuit 13 in the proper order. Thus, to energize magnet .l. the impulses will be lto cnergizethe magnet 2, -l- +5 for magnet 13, for magnet i, formagnet 5, for magnet t5, for magnet 7, l for magnet S,

The instrument, as herein shown and as has been described, is capacited to make selection between and energize but eight dil'ferentmagnets, as this number is sufficient to fully illustrate the principle and operation of the invention. In the practical operation of the system it will usually be necessary to employ a larger number than this, and where that is necessary it can readily be accomplished by a simple addition to the system which has been described. If, for example, sixteen magnets are required, the branches a I) c, &c., will be connected to eight switches similar to the switches 15 16, &c., which will be operated by a pair of magnets similar to the magnets E F, and in the same manner, and will operate to make connection with sixteen branches leading to the sixteen magnets. In such case it will be i'iccessary to transmit three impulses over the main circuit to effect the proper lection and a fourth impulse to cause the energizing of the selected magnet; or, if it is desired to employ thirty-two magnets, a fourth set of switches will be employed in the same manner, and in such case it will be necessary to transmit four impulses to effect the proper selection and a fifth to energize the selected magnet, and by pursuing this system the num ber of magnets can be multiplied indefinitely without in any wise adding to the complication of the system.

In some cases it will be preferable to so organize the system that the switch-bars 22 23 will each operatethe same number of switches, so that the work performed by each of the switch-magnets will be equal. This may be accomplished by organizing the system as illustrated in. Fig. 4, in which the switches 1t; 17 are operated by a third switch-bar, 3.), which is equipped the samcas the bars 22 23, and is controlled by a pair of switch-magnets, I K, which are included in auxiliary circuits formed in part by branches '1! '1', which connect with the switclms it; 17 and with the branches I". By this means the work done by each of the switch=inagnets is equal and is reduced to the minimum. hen the system includes only a eomparativtdy small number of the working-magnets-as, for example, only eight--the maximum number of switches opera-ted by any one magnet is only four, and this number is not so large as to make the work of the magnet unduly heavy; but where the system includes sixteen or more workingmagnets the maximum number of switches operated by one magnet in the organization first described would be eight or more, and this number would in some cases put too much work upon the magnet.

The operation of the system when organized shown in Fig. -.lis subr'ttantially the same as already described, except that the branches in. n o p and a o, the, are so connected that the order of the and currents over the main circuit required to energize the respective magnets l 2, etc, is somewhat different. To illustrate: To energize magnet 1 will require a impulse, which will operate to connect the switch 123 to the branch m,

then a -l impulse to connect the switch to the branch u, and then a second l impulse to energize the magnet 1. To energize magnet 2 will require for magnet 3, for magnet 4s, +3 for magnet 5, l l for magnet U, for magnet l for magnet 8,

It may in some cases be preferable, particularly where the s stem is to be operated over short or comparatively short lines, to energize the magnets (l D E l? and 1 2, &c., directly from the main circuit 13 instead of by a local circuit, and in such case the auxiliary circuits will be simplybranches of the main circuit. If desired, this can be done as illustrated in Fig. 5. In this case the local battery 9 is dispensed with and the auxiliaiy circuits are connected to and form branches of the main circuit: 1?. Between the points where the branchest and 7i I connect with the main circuit the main circuit is provided with a resistance-coil, ll, or any other suitable form of resistance which sufficient to shunt the current or the main part of the current through the branches l 7,: or i I, as the case maybe,whenever either of thosebranehes is closed by the operation of the circuitclosers 10 11.

The operation of the system when thus organized is as follows: \Vhen a l current is sent over the main circuit, the circuit-closer '10 will be operated the same as already de scribed, so as to close the branch 7. and the current over the main circuit will then by reason oftheresistance ll be shunted so asto pass through the branches 7r 1' and their connections, and thus energize the magnets O or E, or one of the magnets l 2, rise, and G, as the case maybe, the same as before described. \Vhen a current is sent over the main circuit B, the circuit-clo'serill willbe operated so as to elosetheln'aneh Z and shunt the current over the main circuit through the branches TIO l 1' and their connections with a corresponding effect.

It will readily be seen that the branches 1' k Z of the system, as illustrated in Fig. 4, may be connected to the main circuitthat circuit being provided with the resistance H so as to dispense with the local battery and circuit in the same manner.

In the system as thus far described it is necessary in order to select and energize any one of eight magnets to transmit three impulses over the main circuit B, and to select and energize any one of sixteen magnets to transmit four impulses, and for thirty-two magnets, five impulses, and so on. This may in some cases make the operation of the system slower than is desirable. \Vhen greater speed is desired, it may be obtained by varying the strength of the current over the main circuit in addition to changing its polarity, and by this means any one of thirty-two magnets may be selected and energized by transmitting three impulses over the circuit, or by transmitting four impulses any one of one hundred and twenty-eight magnets may be selected and energized, and so on. An organization of this character is illustrated in Fig. 6. In this case the local circuit and battery are dispensed with the same as in the organization shown in Fig. 5. The four branches m n o p are connected to switches 13, &c., which are arranged to connect with eight branches, m, &c., which are in turn connected to eight switches, 15 15, &c., corresponding to the switches 15, &c., of the organizations already described. The switches 15, &c., normally connect with the branches s t, and are arranged to connect with sixteen branches, a a, &c., correspondingto the branches a, &c., of the other organizations described. The branches a a, &c., are connected to sixteen switches, 15, &c., which are arranged to connect with thirty-two branches, a &c., which.

connect with the branch 2' and include the thirty-two magnets 1 1, &c. The switches 13, &c., and 15 &c., are operated through switch-bars 22" 23, which are controlled by magnets C D E F, which are included with the magnets O D E F in the respective branches q r s if, so that when the circuit is closed through either one of the branches the current will pass through both of the magnets included in that branch. The retractiles of the armatures of the two magnets included in each branch are, however, so adjusted that the magnets must be energized to different extents in order to-overcome the retractiles and move their armatures. From this it results that by causing a relatively-weak current to pass over the circuit the magnets C D E F may be energized sufliciently to move their armatures without energizing the magnets O D E F sufficiently for that purpose, while if a relatively-strong current is caused to pass over the circuit both magnets will be energized sufficiently to move their arma- ,tu res.

The operation of the system when thus organized is as follows: To energize the magnet 1, there will be sent over the circuit three impulses. The first impulse will be of full strength, so as to energize both the magnets O O and connect the switch 13 with the branch on and the switch 13 with the branch m. The second impulse will also be of full strength, and will operate to energize both the magnets E E and connect the switch 15 with the branch (L and the switch 15 with the branch a The third impulse will operate to energize the magnets 1 and G the same as before described. To energize magnet 1, the operation will be the same, except that the second impulse will be of less strength, so as to energize only the magnet E, thus leaving the switch 15 connected to the branch a and in this manner by combining and impulses of opposite polarity and of greater and less strength each of the thirty-two magnets 1 1, &c., can be selected and energized by three impulses over the line; or the magnets, instead of being energized to operate by different strengths of current, may be cont-rolled by the length of duration of the impulse, and thus the same result be effected.

In some cases it may be desirable to decrease the number of magnets employed for operating the switches 13 14 15, &c., and this can be accomplished by so organizing the system that it will be necessary to move the switch-bars 22 23 in but one direction. An organization of this character is illustrated in Figs. 7, 8, 9, and 10. In this organization the magnets D F are omitted and the switches are arranged to normally maintain connection with the branches at p b d f h, and the magnets 0 E and the connections with the switchbars are so arranged that the switches are shifted when the magnets are energized instead of when they are de-energized. For this purpose the branches q s, which include the magnets O E, instead of connecting with the switches 13 15, &c., when the latter are in their normal position, connect With the circuit 2', and include circuit-closers M N, which are operated at the proper times to close the local circuit through the branches q s, and thus energize the magnets O E to operate the switches. The circuit-closers M N may be of a variety of forms; but as illustrated in the present case they consist of contact-pins 40, extending from a shaft, 41, which is connected to one wire of the circuit 01, and contact fingers or brushes 42, which are connected to the branches q s, and are arranged to make contact with the pins 40 at the proper times as the shaft 41 is revolved. The shaft 41 is provided with a third circuit-closer, O, consisting of similar pins, 40, projecting from the shaft, and a similar brush or finger, 42, connected to the other wire of the circuit i. For

the purpose of operating the circuitrclosers M N O the shaft 41 is provided with a ratchet, 43, having a holding-pawl, 44, and engaged by a driving-pawl, 45, carried by the arma- IIO ture-lever l of an elcctro-magnet, P, termed an auxiliary magnet, which is included in the circuit '1'. The lever to is acted on by the magnet P, so as to retract the pawl 45 upon the ratchet, and by a retractilc, 47, so as to advance the pawl and give a partial turn to the ratchet and the shaft 41 when the magnet s de-energized. The connections for operating the switches 13, &c., are in this case so arranged that the switches are shifted when the magnets are energized, and for this purpose the armature-levers 27 of the magnets are connected directly (see Fig. 9) to the arms of the switch-bars, and the arms 25 are provided with pivoted hooks l9, which, when the magnets are energized, engage with a stationary catch, 26, and hold the bars and switches in the position to which they have been shifted. The arniature-lever 31 of the magnet G is in this case connected to the shaftdiil, the toes 3i of which engage with the hooks 4:8 and release them from the catch 26 whenever the magnet (i is energized. The magnet G, instead of being located in the circuit 2', is located in a branch, in, which includes a circuit-closer, R, also operated by the shaft l-l. For this purpose one wire of the branch in is connected to a weighted lever, L9, having a finger, 50, which is so arranged that when the lever is depressed it enters a smallcup of mercury or other conducting liquid, 51, to which the other wire of the branch is connected. The shaft i1 is provided with two pins, 52, which at the proper times engage with a lip, 53, of insulating material, upon the lever 49 and rock the lever, so as to form contact between the linger 50 and. mercury, 51, and thus close the circuit "i through the branch w and energize the magnet G. The branch Z and circuit '2' are connected by a branch, 1 which includes a resistance-coil or other resistance, L, and also a circuit-closer, S, also operated by the shaft 4-1 and arranged to maintain the branch. y in a closed condition, except at such times as it is required to close the circuit '2 to energize one of the magnets 1 2, &c. This circuit-closer consists of a notched disk, 51, carried by the shaft a1, and a brush or finger, 55, the end of which rests upon the disk and to which the branch y is connected.

The operation of the system when thus organized is as follows: \Vhen the system. is in its normal condition, the circuit-closer M will be in position to close the circuit i through the branch q, and the circuit-closer S will be in position to close the circuit 2' through the branch y. To energize the magnet 1, three l impulses will be sent over the main circuit. The first impulse will operate the circuit-closer 10 to close the circuit 7. through the branches 7; q, and, the branch 1 being closed by the circuitcloser M, the magnet C will be energized, and will act to shift the switch 13 into connection with the branch on, in which position it will be held by the hook t3, and at the same time the magnet P will be energized and will act to retract the pawl 45.

As soon as the magneis l are tie-energized by the breaking of the main circuit and the branch L, the ret-ractile i7 ol' the armaturelever 50 will cause the pawl 45 to engage with the ratchet t and give a partial turn to the shaft 41. This will operate the circuitcloser M, so as to break the branch 1, and at the same time operate the circuit-closer N, so as to close the circuit through the branch .s. The second impulse will then pass through the bran chcs 7t (1 s, thereby energizing the magnets E P, so as to shift the switch into connection with the branch (1, and when the circuit is broken after the second impulse the pawl will move the circuit-closer N, so to break the circuit through the branch 5', and at the same time move the circuit-closers S to close the circuit 1' and break the circuit through the branch 3 The third impulse will then pass through 7.: in. a, so as to energize the magnets l and P, so that the magnet ll will perform its work, and when the circuit is broken after the third impulse the pawl-t5 will move the circuit-closers O M S, so as to break the circuit 11 and close the branches (1 and 2 and at the same time the circuit-closer R will be operated to temporarily close the branch ur, and thus tinnporarily energize the magnet G and cause it to operate to release the hooks i8 and permit the swings it to restore the switches 13, &c., to their normal positions in connection with the branches )1 p, the. To select and energize the magnet /z, for example, three impulses will be required. The first impulse will operate the circuitcloser 1.1 to close the branch I; but the circuit '2' being broken at the circuitcloscr O the magnet 71 will not be energized, but the current over the local circuit will pats through the branch 7] and simply energize the magnet P and move the circuit-closers M. N O S, and the second impulse will act in the same manner; but when the circuit is broken and the magnet P de-energizcd and the circuit closers M N O moved after the second impulse the circuitclosers 0 S will be brought into position to close the circuit 2: and break the branch y, as before, so that upon the third impulse the current over the local circuit will pass through the magnet 7L and energize it to do its work. From this it will be seen that it is only at each third impulse that the local circuit 2' is closed by the circuitcloser O, and that as a consequence it is only each third impulse that is permitted to pass through and energize the selected magnet. It is this feature which permits the switches 12;, &c., to be normally in connection with the branches n p, the. The resistance L is introduced into the branch 1 to balance the resistance of the magnets C E, so that when the current is sent through the branch 2 it will energize the magnet P to only the same or about the same degree that it is energized when the current is sent thrmigh the branches s and magnets (3 E.

It will be observed that in the organizai ion ITO which has just been described, when the circuit-closer 10 is operated to close the circuit throught' q ort' k s to energize the magnets 0 E, the circuit will also at the same time be closed through 2 70 n or m b or (Z f or it 0 or p, Z, and Y thus shunting a certain part of the current around the magnet O or E, as the case may be. The amount of resistance in the shunt-circuit thus formed will, however, be so great that the magnet O or E will be sufficiently energized to perform its work; but if in any case this should prove objectionable it may be overcome by providing the branch Z with a circuit-closer similar to the circuit-closers M N, which will operate to close the branch only at each third impulse. It will be preferable in nearly all cases to employ but a single main circuit, B;

but if in any case it is feasible or desirable to employ two independent main circuits, then the polarized relay A can be omitted and the circuit-closers 1O 11 operated by ordinary magnets, one of which will be located in each of the main circuits; or by employing two main circuits, each provided with a polarized relay and a local circuit, any one of eight magnets maybe selected and energized by no more than two impulses. A11 organization of this character is shown in Fig. 11. In this case two main circuits, B B, are employed, each of which includes a polarized relay, A and A, which operate circuit-closers 1O 11 10 11, which are respectively included in local circuits 1' i i d, which are-supplied with batteries 9 9 and respectively include the magnets O D E E, which operate four switch-bars and their switches 13, &c., in the same manner as already described. The local circuit 2', through which the magnets 1 2, &c., are energized, includes a circuit-closer, 56, which is operated by the armature of the magnet O to close the circuit whenever that magnet is energized, and the circuit 2' is providcd with branches i 1' which respectively include circuit-closers 57 58 59, which are similarly operated by the armatures of the magnets D E F.

The operation of the system when thus organized is as follows: To select and energize the magnet 1, a impulse will be sent over each of the main circuits B B. These impulses will be sent simultaneously and will operate both the circuit-closers 11 and 11 to close the local circuits i 5, and thus energize the magnets C E and shift the switches 13 15 into connection with the branches m a, and at the same time operate the circuit-closers 56 58 to close the circuit 2' and cause the magnet 1 to be energized. To energize magnet 2, a impulse will be sent over circuit B and a impulse over circuit B, for magnet 3 a minus impulse over circuit B alone, for magnet 4 a impulse over circuitB and a impulse over circuit B, for magnet 5 a I over both B and B, for magnet 6 a over B, for magnet 7 a over B and a over B, and for magnet 8 a over B.

That I claim is 1. The combination, with a main circuit, of an auxiliary circuit having branches which include working-inagnets, switches arranged to direct the current over the auxiliary circuit through the different branches, switchmagnets included in auxiliar circuits and connected to operate the switches, and connections between the main circuit and the switch-magnets, whereby diiterent switchmagnets are energized by different conditions of the current over the main circuit, substantially as described.

2. The combination, with a main circuit including an electro-magnet, of an auxiliary circuit having branches which include workingmagnets, a circuit-closer operated through the action of the magnet in the main circuit to close the auxiliary circuit, a switch mechanism for directing the current over the auxiliary circuit through diiferent working-magnets, and switch magnets also included in auxiliary circuits which are closed and broken through the action of the magnet in the main circuit, substantially as described.

3. The combination, with a main circuit including anelectro-magnet, of an auxiliary circuit having branches which include workingmagnets, a circuit-closer operated through the action of the magnet in the main circuit to close the auxiliary circuit, a switch connecting the auxiliary circuit to a plurality of branches, each of which has a switch connectin g with a plurality of other branches which connect with said Working-magnets, switchmagnets for shifting said switches, located in auxiliary circuits which are closed and broken through the action of the magnet in the main circuit, circuit-closers M N, located in the circuits of the respective switch-magnets and operating after each switch-magnet acts to break the circuit through that. magnet and close the circuit through another, substantially as described.

4. The combinaiiomwith a main circuit including an electro-magnet, of an auxiliary circuit having branches which include workingmagnets, a circuit-closer operated through the action of the magnet in the main circuit to close the auxiliary circuit, a switch mechanism for directing the current over the auxiliary circuit through different working-mag nets, and switch-magnets also included in auxiliary circuits which are closed and broken through the action of the magnet in the main circuit, a catch mechanism for holding the switch mechanism in its shifted position, and a releasing-magnet, G, for operating said catch mechanism to release the switch mechanism, substantially as described.

5. The combination with a main circuit including an electromagnet, of an auxiliary circuit having branches which include working-magnets, a circuit-closer operated through the action of the magnet in the main circuit to close the auxiliary circuit, a switch co1inecting the auxiliary circuit to a plurality of branches, each of which has a switch connecting with a plurality of other branches which connect with said working-magnets, switch-magnets for shifting said switches, located in auxiliary circuits which are closed and broken through the action of the magnet in the main circuit, circuit-closers M N, located in the circuits of the respective switch-mag nets and operating after each switch-magnet acts to break the circuit through that magnet and close the circuit through another, a catch mechanism for holding the switches in their shifted position, and a releasing-magnet, Jr, for operating said catch mechanism to release the switches, substantially as described.

(3. The combination, with a main circuit in cluding a polarized relay, of an auxiliary circuit having branches which include workingmagnets, circuit-closers operated through the action of said relay to close the auxiliary circuit through different branches, according to the polarity of the current, a switch mechanism for directing the current over the auxiliary ei rcuitthrough dillerent working-n1agnets, and switch-magnets also included in an auxiliary circuit which is closed and broken through the action of the relay, substantially as described.

7. The con'lbination, with a main circuit ineluding a polarized relay, of an auxiliary circuit having branches which include workingmagnets, circuit-closers operated through the action of said relay to close the auxiliary circuit through different branches, according to the polarity of the current, a switch mechanism t'or directing the current over the auxili ary circuit through different working-magnets and switch-magnets also included in an auxiliary circuit which is closed and broken through the action of the relay, a catch mechanism for holding the switch mechanism in its shifted position, and a releasing-magnet, G, for operating the catch mechanism to release the switch mechanism, substantially as described.

S. The combination, with a main circuit including a polarized relay, of an auxiliary circuit having branches which include workingmagnets, circuit-closers operated through the action of said relay to close the auxiliary circuit through ditlerent branches, according to its polarity, switches 13 1%, connecting each of said branches with a plurality of branches, each of which has a switch connecting with a plurality of other branches which connect with said working-magncts, switch-magnets for shifting said switches, located in auxiliary circuits which are closed and broken through the action of said relay, and circu it-closers M N, located in the circuits of the respective switchmagnets and operating after each switch-magnet acts to break the circuit through that magnet and close the circuit through another, substantially as described.

9. The combination, with a main circuit including a polarized relay, of an auxiliary circuit having branches which include workingmagnets, circuit-closers operated through the action of said relay to close the auxiliary circuit through different branches, according to its polarity, switches 13 ll, connecting each of said branches with a plurality of branches, each of which has a switch connecting with a plurality of other branches which connect with said working-magiicts, switch-magnets for shittingsaid switches, located in auxiliary circuits which are closed and broken through the action of said relay, circuit-closers M N, located in the circuits of the respective switchmagnets and operating after each switcha'nagnet acts to break the circuitthrough that magnet and close the circuit through another, a catch mechanism for holding the switches in their shifted position, and a releasinganagnet, G, for operating said catch mechanism to release the switches, substantially as described.

it). The combination, with a main circuit including an electromagnet, of an auxiliary circuit including an auxiliary magnet, l, and having branches which include working-magnets, a circuit-closer operated through the action of the magnet in the main circuit to close the auxiliary circuit, a ei'rcuitcloser, 0, included in the auxiliary circuit and operated by the auxiliary magnet to close the auxiliary circuit at intervals, a switch mechanism for directing the current over the auxiliary circuit through different workirig-magnets, and switch-magnets included in auxiliary circuits which also include the auxiliary magnet and which are closed and broken through the action of the magnet in the main circuit, substantially as described.

ll. The combination, with a main circuit including a polarized relay, of an auxiliary circuit including an auxiliary magnet, l, and having branches which include working-magnets, circuit-closers operated through the action of the relay to close the auxiliary circuit through dilterent branches, according to the polarity of the current, a circuit-closer, O, included in the auxiliary circuit and operated by the auxiliary magnet to close the circuit at intervals, a switch mechanism for direct-- ing the current over the auxiliary circuit through dillerent working magnets, and switch-magnets included in auxili; ry circuits which also include the magnet l and which are all closed by the action of the relay, and circuit-closers M N, included in f aid auxiliary circuits with the respective switch-magnets and ope 'ated by the auxiliary magnet to close the circuits through the respective switchmagnets successively, substantially as described.

In tcstimon y whereof I have hereunto set my hand in the presei'ice of two subscribing witnesscs.

.lOlIN HURRY.

\Vitnesses:

J. .T. KENNEDY, Gnoncu H. Bo'rrs.

ITO 

